| 摘要 |
A current sense amplifier for a voltage converter wherein the voltage converter has at least one channel providing an output current through an output inductor, the current sense amplifier monitoring the current in the at least one channel through the output inductor, the current sense amplifier comprising a plurality of variable gain amplifiers, there being at least one more variable gain amplifier than channels in the voltage converter, whereby at least one variable gain amplifier is in a calibration mode for a preset period of time during which the variable gain amplifier is compensated for an offset error and the gain of the variable gain amplifier is calibrated to compensate for temperature of the output inductor, while during said preset period of time any remaining variable gain amplifiers are connected to monitor the channel current in each output inductor.
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